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It causes seizures

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FactDuring ECT, a person is given a seizure-inducing electrical shock that can lift depressionalthough no one knows exactly why it works.

"It reboots the system," says Gary Kennedy, MD, director of geriatric psychiatry at Montefiore Medical Center in New York. "Like turning a computer off and when it comes back on they are not as depressed."

The seizure may restore some neuroconnections or reconnect nerves that are "short-circuited." The procedure also may change the levels of norepinephrine, dopamine, and serotonin, which play a role in depression.

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It's only for depression

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MythECT is most commonly used for people with severe depression, particularly those who are delusional or at risk of suicide. But a majority of people with depression do not reach the point that they need electroconvulsive therapy, and many respond instead to treatments like medication and psychotherapy.

The treatment is also sometimes used to reduce mania in people with bipolar disorder (as with the well-publicized treatment of actress Carrie Fisher).

It is used less frequently for people with schizophrenia, particularly those who have a rapid onset or are catatonic, a state in which people don't speak or respond to stimuli.

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It's only used in mental hospitals

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MythIt is not known exactly how many people undergo the therapy each year because most states do not require reporting. Mental Health America, a nonprofit advocacy group, estimates the number to be 100,000 annually.

Treatment can be given at a hospital or psychiatric institution on an outpatient basis for less-severe cases, or on an inpatient basis.

Patients usually get six to 12 treatments over two to four weeks. To prevent relapse, some patients receive what is called maintenance ECT every two weeks to every month, for up to several years.

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It's dangerous

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MythThe early days of electroconvulsive therapy were relatively unfettered and unregulated. "The history of treatment is pretty dramatic and grim," Dr. Kennedy says.

Today, however, the procedure is typically used for just a few conditions and performed under medical supervision. Patients are given general anesthesia before the treatment and a muscle relaxer to ensure that the seizure is mild.

One study found that there were about 2.9 deaths per 10,000 patients treated; another saw only 4.5 deaths per 100,000 treatments.

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It doesn't work

MythThe effectiveness of electroconvulsive therapy over the short term has been relatively well documented, especially for people at risk for suicide.

Dr. Kennedy says about 85% of patients have a full recovery after treatment.

"It can turn the depression around in a matter of days or weeks," he says. The procedure improves people's mood enough that there is no immediate threat of suicide and puts them in a place where they can seek treatment without being a danger to themselves, according to Dr. Kennedy.

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It causes memory loss

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FactOne of the most common side effects of the procedure is memory loss. (Actress Carrie Fisher has joked publicly about it.)

Right after a seizure occurs, whether from ECT, epilepsy, or other reasons, some patients experience short-term confusion. Memory loss usually covers events that took place shortly before the treatment, and for most people the problem doesn't continue for more than a few days. However, some people report memory loss lasting several weeks after the treatment, and older patients may be more likely to have "confusion" that lasts for up to a few weeks, Dr. Kennedy says.

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It's used to punish patients

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MythECT had a bad reputation in the past because of reports of the procedure being used to tame "unruly" mental patients or administered against patients' will.

Charles "Chip" Stone, DO, a clinical and forensic psychiatrist in Orange County, Calif., says that while this practice might have been followed in the 50s and 60s, people still have this perception toward ECT because of what they've seen in movies.

Dr. Stone says that occasionally patients with severe depression or acute mania might be ordered to receive ECT if a court determines it is in their best interest.

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It's a permanent cure

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MythElectroconvulsive therapy is not proven to be a permanent solution for severe depression. Most patients are able to manage their depression and reduce the chance of relapse with maintenance therapy (monthly treatments) and the use of antidepressants.

There may also be a risk of cognitive side effects like memory loss and learning impairments with long-term use. However, there are few studies that have looked at this issue.

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It's a last resort

MythThis therapy is thought of as the last stop on the train for people who have tried everything else and are still suffering.

Dr. Stone says ECT is not used more often for a few reasons: the negative perception and stigma of the treatment, the cost, lack of availability of doctors to administer it, and the time it takes.

But many experts feel that it could be a first-line defense in some situations. "In fact, it is likely one of the safest, if not the safest, and certainly the most rapid treatment for severe depression that exists," Dr. Stone says.